Improvement in windmills



H. M. WOOD. Windmill.

No. 222,340. Patented Dec. 2', 1879'.

HARVEY M. WOOD, OF COMMERGE, MICHIGAN.

IMPROVEMENT IN WINDMILLS.

Specification forming part of Letters Patent No. 222,340, dated December2, 1879; application filed May 15,1879. a

To all 'whom it may concem:

Be it known that I, HARVEY M. WOoD, of Commerce, in the county ofOakland and State of Michigan, have invented an Improvement inWindmills, of which the following is a specification. o

The nature ofmy invention relate to certain new and useful improveinentsin the construction of windmills; and the invention consi sts in thepeculiar construction, arrangement, and combinations of the. variousparts, all as more fully hereinaftcr set forth.

' In the drawings, Figure 1is a perspective', and Fig. 2 is alongitudinal section through the shaft and sliding` sleev'e.

In the aecompanying drawings, which form' a part of this specification,A represents a suitable turn-table mounted upon a proper frame-work.(Not shown.) Rising from the table are the standards a, in which isproperly journaled the shaft B, to the outer end of which is rigidlysecured the hub O, which carries the spokes and riln of the wheel D. Acollar or thimble,E,issleeVed upon this shaft, as shown, 'and hassecured .to its inner end the hub F ot' i the wheel Gr.

i H `representsw the wind-Sails, pivotally secured at or about theircenters to the spokes of the wheel G, while their forward ends areattached to the spokes of the wheel D by means of the.eyebolt-connections b. In this thinible E is cut the spiral' slot c,which qreceives the pin e, projecting from the shaft b,

the parts being so arranged that When the Wheels are dorlnant or stillthe sails H will be at an angle to the shaft, as is clearly shown lclutch-pulley on the re'ar'face of the hub F.

Alever, M, fulcrumed in the standards h, rising'from the rear end of thetable A, is

` connected to the lever 'i by means of the link or connecting-bar N,and to the lever z' is secured a rod, O, which carries a vane, P, uponits upper end.

A bell-crank lever, R, is fulcrumed between the studs k rising,` fromthe rear ,upper corner of the frame L, and is connected at one end tothe lever M by means of the rod S, while to the other end is secured arod, t, which leads down by the side of the pump-rod, forthe purposehereinafter set forth. i

In operation, as the wind increases in force, it exerts its force uponthe vaneoP, gradually causing it to assume a horizontal position, and,by means of its connections, compels the wheel G to slide back upon theshaft, and-thus presents a less area of the sails H to the action of thewind. This movement of the parts also compels the lever M to graduallyassume a position approaching the perpendicular; or, in other words, thelever M and vane P gradually approach each other. As the wind decreasesin force the weight upon theend of the lever Mcauses the parts to assumetheir original positions. 4 o

In case it is desired to throw the sails out of the wind in order toprevent the wheels from revolving', it is accomplished by pulling downupon the rod or cord t, and securing itso that the weight cannot forcethe sails into the wind.

What I claim as my invention is 1. In a windmill, the combination, withthe turn-table A and shaft B, of the Wheels D G, the 1atter being'provided with a collar, E, which slides upon the shaft, and the Sails H,pivoted to such Wheels D G, substantially as and for the purposes setforth.

2. In a windmill the combination of` thevane P, lever M, and their'connections with the Wheels D G and sails H, which are pivoted to saidWheels, substantially as and for the purposes set forth.

3. A windmill consisting of the table A, shaft B, Wheels D G, sleeve E,sailsH, pivoted to said Wheels D G, tail-Vane K, lever M, vane P,bell-crank lever R, links N 8, and rod 1', when constructed and arrangedto operate substantially as and for the purposes specified.

HARVEY M. WOOD.

Witnesses H. S. SPRAGUE, UHAs. THURMAN.

PATENT OFFICE.

